Integrated connector for multi-stage compressor
AssigneeDanfoss A/S
InventorsArnold Martin Schaefer, Jin Yan, Alonso Misael Perez
Life of this patent
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Abstract
This disclosure relates to a compressor having at least two compression stages. In particular, an exemplary compressor includes a first radial compression stage arranged along an axis, a second radial compression stage arranged along the axis, and a connector fluidly connecting an outlet of the first radial compression stage to an inlet of the second radial compression stage. The connector has a plurality of sections arranged about the axis. The compressor may be a refrigerant compressor used in a heating, ventilation, and air conditioning (HVAC) chiller system.
Claims21
A refrigerant compressor, comprising:
- a first radial compression stage arranged along an axis;
- a second radial compression stage arranged along the axis;
- and
- a connector fluidly connecting an outlet of the first radial compression stage to an inlet of the second radial compression stage, the connector having a plurality of channels circumferentially spaced-apart from one another about the axis and configured such that fluid flowing within each of the plurality of channels flows from the outlet to the inlet in parallel to fluid flowing within others of the plurality of channels, wherein each channel includes a first radial portion adjacent the outlet, a second radial portion adjacent the inlet, and an axial portion extending between the first and second radial portions, wherein each of the plurality of channels includes a curved portion connecting the first radial portion and the axial portion, wherein each curved portion exhibits an increased height relative to a remainder of the respective channel.
A refrigerant system comprising:
- a main refrigerant loop including a compressor, a condenser, an evaporator, and an expansion device, wherein the compressor includes:
- a first radial compression stage arranged along an axis;
- a second radial compression stage arranged along the axis;
- and
- a connector fluidly connecting an outlet of the first radial compression stage to an inlet of the second radial compression stage, the connector having a plurality of channels circumferentially spaced-apart from one another about the axis and configured such that fluid flowing within each of the plurality of channels flows from the outlet to the inlet in parallel to fluid flowing within others of the plurality of channels, wherein each of the plurality of channels includes a section exhibiting an increased volume relative to a remainder of the respective channel, wherein, within each section, a radially inner portion of a wall of each respective channel exhibits a concave contour when viewed from a radially outer perspective.
A refrigerant compressor, comprising:
- a first radial compression stage arranged along an axis;
- a second radial compression stage arranged along the axis;
- and
- a connector fluidly connecting an outlet of the first radial compression stage to an inlet of the second radial compression stage, the connector having a plurality of sections arranged about the axis,
- wherein each of the plurality of sections comprises a channel that communicates fluid from the outlet to the inlet,
- wherein each channel includes a first radial portion adjacent the outlet, a second radial portion adjacent the inlet, and an axial portion extending between the first and second radial portions, and
- wherein a pocket is formed in each channel between the outlet and the inlet.
Dependencies are inferred from the claim text.